diff --git a/infrastructure/hydra/postgres/pg-cluster.yaml b/infrastructure/hydra/postgres/pg-cluster.yaml
index 9a9007d..5f435d1 100644
--- a/infrastructure/hydra/postgres/pg-cluster.yaml
+++ b/infrastructure/hydra/postgres/pg-cluster.yaml
@@ -5,6 +5,7 @@ metadata:
   namespace: cnpg-cluster
 spec:
   affinity: {}
+  imageName: ghcr.io/tensorchord/cloudnative-pgvecto.rs:16.3-v0.2.1
   instances: 3
   managed:
     roles:
diff --git a/pkg/postgres/postgres.go b/pkg/postgres/postgres.go
index 7e96f7f..c83bd41 100644
--- a/pkg/postgres/postgres.go
+++ b/pkg/postgres/postgres.go
@@ -27,6 +27,7 @@ func Stack() stack.Stack {
 func Cluster() pg.Cluster {
 	spec := pg.ClusterSpec{
 		Instances: 3,
+		ImageName: "ghcr.io/tensorchord/cloudnative-pgvecto.rs:16.3-v0.2.1",
 		StorageConfiguration: pg.StorageConfiguration{
 			StorageClass:       new(root.KUBE_LOCAL_STORAGE_CLASS),
 			Size:               "10Gi",